Question 1

Duplicated chromosomes linked together at their centromeres at the beginning of meiosis are appropriately called what kind of chromatids?

Accepted Answer

A) mother 
B) daughter 
C) sister 
D) homologous 
E) haploid 
A) mother 
B) daughter 
C) sister 
D) homologous 
E) haploid C

Question 2

The above figure represents

Accepted Answer

A) individual genes from an asexual worm. 
B) maternal chromosomes that are identical. 
C) paternal chromosomes that are identical. 
D) both maternal and paternal chromosomes. 
E) none of these. 
A) individual genes from an asexual worm. 
B) maternal chromosomes that are identical. 
C) paternal chromosomes that are identical. 
D) both maternal and paternal chromosomes. 
E) none of these. D

Question 3

Which of the following is NOT an advantage of sexual reproduction?

Accepted Answer

A) It offers an alternative adaptation in a changing environment. 
B) It is adaptive in coevolution situations. 
C) It is energetically costly. 
D) The genetic variation it provides may be useful in the future. 
E) It yields offspring with novel combinations of traits. 
A) It offers an alternative adaptation in a changing environment. 
B) It is adaptive in coevolution situations. 
C) It is energetically costly. 
D) The genetic variation it provides may be useful in the future. 
E) It yields offspring with novel combinations of traits. C

Question 4

Through meiosis

Accepted Answer

A) alternate forms of genes are shuffled. 
B) parental DNA is divided and distributed to forming gametes. 
C) the diploid chromosome number is reduced to haploid. 
D) offspring are provided with new gene combinations. 
E) all of these occur. 
A) alternate forms of genes are shuffled. 
B) parental DNA is divided and distributed to forming gametes. 
C) the diploid chromosome number is reduced to haploid. 
D) offspring are provided with new gene combinations. 
E) all of these occur.

Question 5

Asexually produced daughter cells are

Accepted Answer

A) identical to each other. 
B) identical to the parental cell. 
C) different from the parental cell. 
D) different from each other. 
E) identical to each other and to the parental cell. 
A) identical to each other. 
B) identical to the parental cell. 
C) different from the parental cell. 
D) different from each other. 
E) identical to each other and to the parental cell.

Question 6

The mature ovum is produced by maturation of the

Accepted Answer

A) oogonium. 
B) primary oocyte. 
C) secondary polar body. 
D) polar body I. 
E) none of these. 
A) oogonium. 
B) primary oocyte. 
C) secondary polar body. 
D) polar body I. 
E) none of these.

Question 7

Paired homologous chromosomes are found at the spindle equator during

Accepted Answer

A) metaphase I. 
B) telophase I. 
C) prophase II. 
D) metaphase II. 
E) anaphase II. 
A) metaphase I. 
B) telophase I. 
C) prophase II. 
D) metaphase II. 
E) anaphase II.

Question 8

Chromatids are

Accepted Answer

A) attached at the centriole. 
B) a pair of chromosomes, one from the mother and one from the father. 
C) attached at their centromeres. 
D) identical until crossing over occurs. 
E) attached at their centromeres and are identical until crossing over occurs. 
A) attached at the centriole. 
B) a pair of chromosomes, one from the mother and one from the father. 
C) attached at their centromeres. 
D) identical until crossing over occurs. 
E) attached at their centromeres and are identical until crossing over occurs.

Question 9

Meiosis typically results in the production of

Accepted Answer

A) two diploid cells. 
B) four diploid cells. 
C) four haploid cells. 
D) two haploid cells. 
E) one triploid cell. 
A) two diploid cells. 
B) four diploid cells. 
C) four haploid cells. 
D) two haploid cells. 
E) one triploid cell.

Question 10

A pine tree is called a sporophyte because it

Accepted Answer

A) develops from a germinated spore. 
B) produces spores by meiosis. 
C) is haploid. 
D) undergoes fertilization. 
E) reproduces by both sexual and asexual means. 
A) develops from a germinated spore. 
B) produces spores by meiosis. 
C) is haploid. 
D) undergoes fertilization. 
E) reproduces by both sexual and asexual means.

Question 11

Which of the following will NOT develop into one or more gametes?

Accepted Answer

A) spermatogonium 
B) polar bodies 
C) primary oocyte 
D) spermatid 
E) secondary spermatocyte 
A) spermatogonium 
B) polar bodies 
C) primary oocyte 
D) spermatid 
E) secondary spermatocyte

Question 12

Crossing over

Accepted Answer

A) generally results in binary fission. 
B) involves centrioles. 
C) involves breakages and exchanges between sister chromatids. 
D) results in new combinations of alleles being channeled into the daughter cells. 
E) does all of these. 
A) generally results in binary fission. 
B) involves centrioles. 
C) involves breakages and exchanges between sister chromatids. 
D) results in new combinations of alleles being channeled into the daughter cells. 
E) does all of these.

Question 13

Which of the following events does NOT occur in prophase II but does occur in prophase I?

Accepted Answer

A) crossing over 
B) pairing of homologues 
C) spindle formation 
D) crossing over and pairing of homologues only 
E) crossing over, pairing of homologues, and spindle formation 
A) crossing over 
B) pairing of homologues 
C) spindle formation 
D) crossing over and pairing of homologues only 
E) crossing over, pairing of homologues, and spindle formation

Question 14

Which event occurs in mitosis but NOT in meiosis?

Accepted Answer

A) bipolar spindle formation 
B) tethering of chromosomes to microtubules 
C) chromosomes dragged to poles by microtubules 
D) nuclear envelopes breaking up and reforming 
E) none of these 
A) bipolar spindle formation 
B) tethering of chromosomes to microtubules 
C) chromosomes dragged to poles by microtubules 
D) nuclear envelopes breaking up and reforming 
E) none of these

Question 15

Which of the following is TRUE at the end of telophase I in corn (20 chromosomes)?

Accepted Answer

A) Each cell has 10 chromosomes. 
B) Each chromosome is double-stranded. 
C) Centromeres connect sister chromatids. 
D) Each cell has 10 chromosomes, and each chromosome is double-stranded. 
E) Each cell has 10 chromosomes, each chromosome is double-stranded, and centromeres connect sister chromatids. 
A) Each cell has 10 chromosomes. 
B) Each chromosome is double-stranded. 
C) Centromeres connect sister chromatids. 
D) Each cell has 10 chromosomes, and each chromosome is double-stranded. 
E) Each cell has 10 chromosomes, each chromosome is double-stranded, and centromeres connect sister chromatids.

Question 16

Sexual reproduction

Accepted Answer

A) leads to uniform characteristics within a population. 
B) results in new combinations of genetic traits. 
C) creates genetic clones. 
D) requires less tissue differentiation than asexual reproduction. 
E) produces genetic clones and requires less tissue differentiation than asexual reproduction. 
A) leads to uniform characteristics within a population. 
B) results in new combinations of genetic traits. 
C) creates genetic clones. 
D) requires less tissue differentiation than asexual reproduction. 
E) produces genetic clones and requires less tissue differentiation than asexual reproduction.

Question 17

The Red Queen hypothesis may explain

Accepted Answer

A) why asexual reproduction is easier and faster than sexual reproduction. 
B) why aphids seasonally alternate parthenogenesis with sexual reproduction. 
C) the existence of all-female species of animals. 
D) the connection between species interactions and sexual reproduction. 
E) why meiosis and fertilization alternate during sexual reproduction. 
A) why asexual reproduction is easier and faster than sexual reproduction. 
B) why aphids seasonally alternate parthenogenesis with sexual reproduction. 
C) the existence of all-female species of animals. 
D) the connection between species interactions and sexual reproduction. 
E) why meiosis and fertilization alternate during sexual reproduction.

Question 18

Sister chromatids are separated from each other during

Accepted Answer

A) metaphase I. 
B) anaphase I. 
C) telophase II. 
D) anaphase II. 
E) metaphase II. 
A) metaphase I. 
B) anaphase I. 
C) telophase II. 
D) anaphase II. 
E) metaphase II.

Question 19

Which of the following does NOT produce variation?

Accepted Answer

A) crossing over 
B) random alignment of chromosomes during meiosis 
C) asexual reproduction 
D) genetic recombination of alleles 
E) sexual reproduction 
A) crossing over 
B) random alignment of chromosomes during meiosis 
C) asexual reproduction 
D) genetic recombination of alleles 
E) sexual reproduction

Question 20

If meiosis did NOT occur in sexually reproducing organisms,

Accepted Answer

A) growth of the zygote would be halted. 
B) mitosis would be sufficient. 
C) gametes would be haploid. 
D) the chromosome number would double in each generation. 
E) eggs would be haploid, but sperm would be diploid. 
A) growth of the zygote would be halted. 
B) mitosis would be sufficient. 
C) gametes would be haploid. 
D) the chromosome number would double in each generation. 
E) eggs would be haploid, but sperm would be diploid.

Exam 10: Meiosis and Sexual Reproduction

Duplicated chromosomes linked together at their centromeres at the beginning of meiosis are appropriately called what kind of chromatids?

The above figure represents

Which of the following is NOT an advantage of sexual reproduction?

Through meiosis

Asexually produced daughter cells are

The mature ovum is produced by maturation of the

Paired homologous chromosomes are found at the spindle equator during

Chromatids are

Meiosis typically results in the production of

A pine tree is called a sporophyte because it

Which of the following will NOT develop into one or more gametes?

Crossing over

Which of the following events does NOT occur in prophase II but does occur in prophase I?

Which event occurs in mitosis but NOT in meiosis?

Which of the following is TRUE at the end of telophase I in corn (20 chromosomes)?

Sexual reproduction

The Red Queen hypothesis may explain

Sister chromatids are separated from each other during

Which of the following does NOT produce variation?

If meiosis did NOT occur in sexually reproducing organisms,

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

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